Write a method that takes a String and returns it in AltCase.This means that the first letter is uppercase and each subsequent character alternates between lowercase and uppercase.Here are some examples of words in AltCase:HeLlOHeLlO WoRlDThIs iS In aLtCaSe.Note: if there is a space, you still treat that as a character, so the String "A B" is in AltCase, since technically, the space between the letters is lower case.
Question
Write a method that takes a String and returns it in AltCase.This means that the first letter is uppercase and each subsequent character alternates between lowercase and uppercase.Here are some examples of words in AltCase:HeLlOHeLlO WoRlDThIs iS In aLtCaSe.Note: if there is a space, you still treat that as a character, so the String "A B" is in AltCase, since technically, the space between the letters is lower case.
Solution
Sure, here is a simple method in Java that converts a string to AltCase:
public class Main {
public static void main(String[] args) {
System.out.println(toAltCase("hello world"));
}
public static String toAltCase(String s) {
StringBuilder sb = new StringBuilder();
for (int i = 0; i < s.length(); i++) {
char c = s.charAt(i);
if (i % 2 == 0) {
sb.append(Character.toUpperCase(c));
} else {
sb.append(Character.toLowerCase(c));
}
}
return sb.toString();
}
}
This method works by iterating over each character in the string. If the index of the character is even, it converts the character to uppercase. If the index is odd, it converts the character to lowercase. The converted characters are appended to a StringBuilder, which is then converted to a string and returned.
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